Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
check_box_outline_blank
Cosmology and astronomy: Hubble's law
Hubble's Law Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the brain-be…
VideoFree11 minutes
check_box_outline_blank
Biology: Taxonomy and the tree of life
The science of taxonomy and where humans fit into the tree of life. Biology Life is beautiful! From atoms to cells, from genes to proteins,…
VideoFree13 minutes
check_box_outline_blank
Organic chemistry: Carbocation stability and rearrangement introduction
Representing carbocations using Lewis structures and model showing the empty p orbital. Hyperconjugation and rearrangements to form more st…
VideoFree10 minutes
check_box_outline_blank
Biology: Ecosystems and ecological networks
Flow of energy and matter through ecosystems. What happens if an ecosystem is disrupted. Video by California Academy of Sciences. Biology L…
VideoFree9 minutes
check_box_outline_blank
Cosmology and astronomy: Quasar correction
Quasar Correction Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the bra…
VideoFree2 minutes
check_box_outline_blank
Biology: Electrochemical gradients and secondary active transport
How a cell can use a molecule's electrochemical gradient to power secondary active transport. Biology Life is beautiful! From atoms to cell…
VideoFree5 minutes
check_box_outline_blank
Organic chemistry: Hydrohalogenation of alkynes
Reaction of an alkyne with a hydrogen halide, leading to formation of a halogenated alkene or alkane. Organic chemistry Sal and Jay cover t…
VideoFree10 minutes
check_box_outline_blank
High school biology: Co-dominance and Incomplete Dominance
Come learn about Co-dominance and incomplete dominance and how they differ from complete dominance. By Ross Firestone. High school biology …
VideoFree3
check_box_outline_blank
Chemistry: Introduction to electrolysis
Comparing a voltaic cell to an electrolytic cell. Chemistry Did you know that everything is made out of chemicals? Chemistry is the study o…
VideoFree7 minutes
check_box_outline_blank
Biology: DNA replication and RNA transcription and translation
How DNA is copied (replication). How information in DNA can be used to make a protein. Biology Life is beautiful! From atoms to cells, from…
VideoFree15 minutes
check_box_outline_blank
Chemistry: Strong acids and strong bases
Common strong acids and strong bases. Examples of calculating the pH of a nitric acid solution, sodium hydroxide solution, and a calcium hy…
VideoFree13 minutes
check_box_outline_blank
Biology: Natural selection and the owl butterfly
How the "Owl Butterfly" may have gotten the spot on its wings. Biology Life is beautiful! From atoms to cells, from genes to proteins, from…
VideoFree13 minutes
check_box_outline_blank
Biology: ATP & respiration
In which Hank does some push ups for science and describes the "economy" of cellular respiration and the various processes whereby our bodi…
VideoFree13 minutes
check_box_outline_blank
Biology: Reaction coupling to create glucose-6-phosphate
Reaction coupling to create glucose-6-phosphate. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations t…
VideoFree7 minutes
check_box_outline_blank
Biology: Genetic variation, gene flow, and new species
How genetic variation is the raw material of evolution, and how restricted gene flow can lead to the formation of new species. Video by Cal…
VideoFree12 minutes